Diese Liste beinhaltet alle Bahngesellschaften, die im Official Guide of the Railways and Steam Navigation Lines of the United States, Porto Rico, Canada, Mexico and Cuba, Ausgabe Juni 1916, gelistet sind. Die Gesellschaften sind nach Spurweite geordnet.
2 Fuß (610 mm)[]
- Bridgton and Saco River Railroad
- Hornos Railroad
- Kennebec Central Railroad
- Monson Railroad
- Sandy River and Rangeley Lakes Railroad
- Wiscasset, Waterville and Farmington Railway
2 Fuß 6 Zoll (762 mm)[]
- Cuban Central Railways (teilweise)
- Mapimi Railway
- Potosi Central Railroad
3 Fuß (914 mm)[]
- Argentine and Gray's Peak Railroad
- Atlantic Coast Line Railroad (teilweise)
- Au Sable and North-Western Railway
- Big Level and Kinzua Railroad
- Book Cliff Railroad
- Boston, Revere Beach and Lynn Railroad
- Branchville and Bowman Railroad
- British Columbia Yukon Railway
- British Yukon Railway
- Cairo Railroad
- Cairo and Kanawha Railway
- Canon City and Cripple Creek Railroad
- Catskill and Tannersville Railway
- Catskill Mountain Railway
- Chihuahua Mineral Railway
- Coahuila and Zacatecas Railway
- Colorado and Southern Railway (teilweise)
- Colorado Eastern Railroad
- Colusa and Lake Railroad
- Cuban Central Railways (teilweise)
- Death Valley Railroad
- Denver and Rio Grande Railroad (teilweise)
- Denver, Boulder and Western Railroad
- Desague Valle de Mexico Railroad
- Diamond and Caldor Railway
- Eagles Mere Railroad
- East Broad Top Railroad and Coal (teilweise)
- East Tennessee and Western North Carolina Railroad (teilweise)
- Elk and Little Kanawha Railroad
- Eureka Nevada Railway
- Golden Circle Railroad
- Hoosac Tunnel and Wilmington Railroad
- Ilwaco Railroad
- Interoceanic Railway of Mexico
- Iron Mountain Railway
- Ixtlahuaca Railway
- Jalapa and Teocelo Railway
- Kentwood and Eastern Railway (teilweise)
- Kentwood, Greensburg and Southwestern Railroad
- Lake Tahoe Railway and Transportation
- Lancaster, Oxford and Southern Railroad
- Laurel Railway
- Lawndale Railway and Industrial
- Linville River Railway
- Lorama Railroad
- Matehuala Railways
- Mexican Interoceanic Railway
- Mexican Mineral Railway
- Mexican Southern Railway
- Mexican Union Railway
- Michoacan and Pacific Railway
- Morenci Southern Railway
- Mountain Central Railway
- Mount Airy and Eastern Railway
- Nantucket Railroad
- Nantucket Central Railroad
- Nevada-California-Oregon Railway
- Nevada Central Railroad
- Nevada County Narrow Gauge Railroad
- New Berlin and Winfield Railroad
- Newport and Sherman's Valley Railroad
- North Shore Railroad (teilweise)
- Oaxaca and Ejutla Railroad
- Ohio River and Western Railway
- Otis Railway
- Pacific and Arctic Railway and Navigation
- Pacific Coast Railway
- Pajaro Valley Consolidated Railroad
- Panuco Mountain and Monclova Railroad
- Parral and Durango Railroad (Parral Branch)
- Potomac, Fredericksburg and Piedmont Railroad
- Potosi and Rio Verde Railway
- Profile and Franconia Notch Railroad
- Rio Grande Southern Railroad
- Sierra and Mohawk Railway
- Silverton Railway
- Silverton, Gladstone and Northerly Railroad
- Silverton Northern Railroad
- Southern Railway (50 ml)
- Southern Pacific Lines
- Sumpter Valley Railway
- Surry, Sussex and Southampton Railway
- Tidewater and Western Railroad
- Tionesta Valley Railway
- Toluca and San Juan Railroad
- Toluca and Tenango Railroad
- Tuscarora Valley Railroad
- Twin Mountain and Potomac Railroad
- Uintah Railroad
- Unicoi Railway
- Union Pacific Railroad (nur Colorado Division, dreischienig 1435/914mm)
- United Railroads of Yucatán (teilweise)
- United Verde and Pacific Railway
- Valley River Railway
- Veracruz Railway
- Waynesburg and Washington Railroad
- Wellington and Powellsville Railroad
- West Virginia Midland Railroad (teilweise)
- White Deer and Loganton Railway
- White Pass and Yukon Route
- Zitacuaro and Joconusco Railroad
1 Meter (1000 mm)[]
- American Railroad of Porto Rico
- Porto Rico Railroads
3 Fuß 6 Zoll (1067 mm)[]
- El Oro Mining and Railway
- Mauch Chunk, Summit Hill and Switchback Railroad
- Mauch Chunk Switchback Railway
- Newfoundland Railway
- Prince Edward Island Railway
- Reid Newfoundland Company
- Rio Grande Railway
- Switch-Back Railroad
3 Fuß 8 Zoll (1118 mm)[]
- Susquehanna and Eagles Mere Railroad
3 Fuß 8½ Zoll (1130 mm)[]
- Cape Breton Railway
3 Fuß 9½ Zoll (1156 mm)[]
- Arcata and Mad River Railroad
4 Fuß 8½ Zoll (1435 mm)[]
alle anderen (werden später ergänzt)
4 Fuß 8¾ Zoll (1441 mm)[]
- Cumberland and Pennsylvania Railroad
- Macon and Birmingham Railway
- Milltown Air Line Railway
- Nittany Valley Railroad
- Sharpsville Railroad
- South Manchester Railroad
4 Fuß 9 Zoll (1448 mm)[]
- Atlantic Coast Line Railroad (teilweise)
- Augusta Southern Railroad
- Eastern Kentucky Railway
- Florida East Coast Railway
- Flovilla and Indian Springs Railway
- Northern Alabama Railway
- Ohio and Kentucky Railway
- Southern Railway (teilweise)
- Strasburg Railroad
- Susquehanna, Bloomsburg and Berwick Railroad
- Sylvania and Girard Railroad
- Sylvania Central Railroad
- Tennessee Northern Railway
5 Fuß (1524 mm)[]
- Panama Railroad
- Puerto Principe and Nuevitas Railway